Question
The audible range of human car is 20Hz - 20KHz. What is the corresponding wavelength range? (Speed of sound in air at ordinary temperature is 340 m/s)
Solution
Wavelength of the wave is given by,
Wavelength corresponding to frequency 20 Hz is,
and
Wavelength corresponding to frequency 20KHz is,
Wave length range of audible sound is 0.017m to 17m.